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Sony Semiconductor Electronic Components Datasheet

CXA3621GE Datasheet

Fingerprint Sensor

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Fingerprint Sensor
CXA3621GE
Description
The CXA3621GE is an electrostatic capacitance
method fingerprint sensor.
This monolithic IC integrates the sensor block,
sense amplifier (3-bit gain adjustment), sample-and-
hold, output amplifier and output buffer needed to
acquire fingerprint images, as well as the timing
generator for determining the operation of these
functions onto a single chip.
30 pin LLGA (Plastic)
Features
Electrostatic capacitance type sensor (charge transfer method)
Number of pixels: 192 × 128
317 DPI
Low power consumption (50mW or less) When P/S: 18µW or less
Single 3.0V power supply
Sensor gain control: 3 bits
S/N ratio improved by on-chip sensor block parasitic capacitance cancel function
Applications
Fingerprint verification units
Structure
Silicon gate CMOS IC
Absolute Maximum Ratings (Ta = 25°C)
Supply voltage
AVDD, DVDD VSS – 0.5 to +7.0
Input voltage
VI VSS – 0.5 to VDD + 0.5
Output voltage
VO VSS – 0.5 to VDD + 0.5
Operating temperature
Topr
–20 to +75
Storage temperature
Tstg
–25 to +125
Allowable power dissipation
PD
1100
V
V
V
°C
°C
mW
Recommended Operating Conditions
Supply voltage
AVDD, DVDD
Ambient operating temperature Ta
2.7 to 3.6
0 to +50
V
°C
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E02127-PS


Sony Semiconductor Electronic Components Datasheet

CXA3621GE Datasheet

Fingerprint Sensor

No Preview Available !

Block Diagram
CXA3621GE
XSP (D/I)
CLK (D/I)
ADCLK (D/O)
SENSOR
C_SP
UC
UC
C_CLK
UC
128
UC
UC
UC UC UC UC ........... 192 ........... UC UC UC UC
S_CNT
192
Sense AMP (×192)
Load
192
S/H & SW (×192)
R_SP
192
Row Shift Register
3bit
DAC
3
DI (D/I)
Output
Buffer
AOUT (A/O)
R_CLK
VOS (Bias)
–2–


Part Number CXA3621GE
Description Fingerprint Sensor
Maker Sony Corporation
Total Page 14 Pages
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